Pile-warp-supplying mechanism for looms



(No Model.)-

B. POSTER.

PILE WARP SUPPLYING MEGHANISM FOB LOOMS.

No. 428,902. Patented May 27, 1890.

UNITED STATES PATENT OFFICE.

ROBERT FOSTER, OF SEYMOUR, CONNECTICUT.

PlLE-WARP-SUPPLYING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 428,902, dated May 27,1890.

Application filed October '7, 1889. Serial No. 326,249- (No model.)

To all whom it may concern:

Be it known that 1, ROBERT FOSTER, of Seymour, in the-county of NewHaven and State of Connecticut, have invented new Improvements inPile-WVarp-Supplying Mechanisms for Looms; and I do hereby declare thefollowing, when taken in connection with accompanying drawings and theletters of reference marked thereon, to be a full, clear, and exactdescription of the same, and which said drawings constitute part of thisspecification, and represent, in-

Figure 1, a View in end elevation of one form which a loom embodying myinvention may assume; Fig. 2, a View in the nature of a diagram, andshowing how the pile warps are let off and taken up preparatory to beingfed into the machine.

My invention relates to an improvement in positively-driven let-offs forpile-fabric looms, the object being to simplify the construction andoperation of the looms, and by securing uniformity in the pile to avoidwaste of stock both in weaving and finishing the fabric.

WVith these ends in view myinvention consists in certain details ofconstruction, as will be hereinafter described and pointed out in theclaims.

As herein shown, the two pile-warp beams A A are mounted in suitablebearings upon the top of the frame B of the machine, the pile warps C Cfrom the said beams being led under a compression-roller D, and thenover a feed-roll E, with which the said compression-roller is incontact. After leaving the said feed-roll the pile warps are separatedand respectively led forward over in front of guide-rollers F F, andthen rearward, downward, and over two horizontal take-up rods'G G, whichare located and operate in the plane in which the pile warps O C are fedto the feeding mechanism of the loom. Each of the said rods is providedat each end with abearing H, located in an open horizontal box I, andprovided with a horizontal spindle J, playing through an opening formedin the forward end of the box, each spindle being encircled by a springK, adapted to exert a constant tendency to move the rods back, and sotake up the slack in the pile-warps. The pile warps, after passing overthe rods, are led directly forward to the weaving mechanism 0f the loom,between the backing warps L L, which are fed from the backingwarp beamsM M.

The feed-roll is positively driven from the main shaft L of the machineby means of a worm O, mounted on the said shaft, a wormgear P meshinginto the said worm and secured to the lower end of a long shaft Q,supported in bearings R R, attached to the frame 13, and provided at itsupper end with abevelgear S, meshing into an idle-gear T, which in turnmeshes into a gear U, mounted upon the feed-roll, which has already beendescribed.

It will be readily understood that as the actuation of the feed-roll ispositive, and that as both of the pile warps are fed from it, thefeeding of the two pile warps will be absolutely uniform, whereby auniform pile necessarily results. As fast as the pile-warps are let offfrom the feed-roll, the slack in them is taken up by the take-up rods,which are alternately pulled forward against the tension of theirsprings by the taking up of the warps into the fabric, the two warpsbeing taken up alternately into the fabric in harmony with the action ofthe machine in first using one of the pile warps and then the other, andso on. It will be noticed that the pile warps are led between thebacking-warp beams, so thatthe pile warps are not crossed with thebacking warps, as in many looms, whereby the annoyance and wasteresulting fromthe tangling and breaking of the crossing-warps areavoided. By letting off both of the pile warps from the same roll thelet-off of both of the said warps is made absolutely uniform, anduniformity in the pile secured without relying upon the shearingof thepile to secure the same result, the shearing of the pile alwaysinvolving a waste of stock and reducing the value of the finished fabricby shortening the length of the pile.

The take-up rods, as by me constructed, operate to take up the slack inthe pile warps, but never pull the same so as to interfere with theright formation of the pile, as often happens in pile fabric loomsemploying weights, which, if they do not act freely, pull the warps andprevent the pile from forming, and thus cause aloss. By locating thetakeup rods in the plane in which the pile warps are fed to the weavingmechanism of the loom and arranging for them to operate in the saidplane the rods respond directly to the call of the said. mechanism,whereby although the slack is always taken up effectually it is donewith the minimum of friction and with the imposition of the minimum ofstrain on the threads in overcoming the tension of the take-upmechanism.

I claim- 1. In a pile-fabric loom, the combination, with twobacking-warp beams, of two pilewarp beams, a single feed-roll, overwhich the pile-warp threads from both of the said pilewarp beams arepassed, two guide-rollers, over which the threads are led from thefeed-roll, two horizontal take-up rods located in the plane in which thepile-warp threads are fed to the weaving mechanism of the loom, twopairs of horizontal boxes located in the same plane and affordingbearing for the ends of the rods, springs located in the boxes andcombined with the rods to actuate the same in taking up slack in thewarp-threads which are led over them, and means for positively actuatingthe feed-roll, whereby the slack in the threads is taken up with theminimum of friction and of strain on the threads, substantially asdescribed.

2.111 a pile-fabric loom, the combination, with two pile-warp beams, ofa single feed-roll, over which the pile-warp threads from both of thepile-warp beams are passed, two horizontal take-up rods located in theplane in which the pile-warp threads are fed to the feeding mechanism ofthe loom, two pairs of horizontal boxes located in the same plane andreceiving hearings to which the ends of the rods are attached,ahorizontal spindle attached to each bearing and playing through anopening formed in the forward end of each box, and a spring encirclingeach spindle and exerting a constant effort to push the bearings to therear ends of the boxes and responding to the callof the feedingmechanism for pile-warp threads, whereby the slack of the said threadsis taken. up with the minimum of friction and of strain on the threads,substantially as described.

ROBERT FOSTER.

\Vitncsses:

R. RANDALL DAVIDSON, S. HART CULVER.

